There are many different eye conditions that are associated with congenital nystagmus; theoretically, any bilateral visually-significant pathology present at birth or in infancy during the critical period of visual development may interfere with the development of stable fixation (1). Eventually I'll get around to discussing the finer points of nystagmus; but for now, I'm sticking to some basic study stuff.

Here's a little mnemonic that I used to help me remember some of the conditions associated with congenital nystagmus, the 4 A's:

Leber's congenital Amaurosis

Aniridia

Achromatopsia

Albinism

Keep in mind that these are not the only conditions associated with congenital nystagmus!